А.А. Pakhomov - Dr.Sc. (Eng.), Research Scientist, Kotelnikov Institute of Radio Engineering and Electronics of RAS. E-mail: potapov@cplire.ru А.А. Potapov - Dr.Sc. (Phys.-Math.), Professor, Senior Research Scientist, Kotelnikov Institute of Radio Engineering and Electronics of RAS. E-mail: potapov@cplire.ru